Repair structure and method for liquid crystal display

ABSTRACT

A data line repair structure for a liquid crystal display panel is disclosed. The data line repair structure includes a first repair line parallel to the scan line and crossing a first end of the data line; a fourth repair line formed in an oblique line area of the liquid crystal panel, coupled to the first repair line; a second repair line parallel to the data line, coupled to the gate driving chip and the fourth repair line; a third repair line parallel to the scan line, coupled to the second repair line and separated from a second end of the data line; and a floating line connected between the third repair line and the second end of the data line when the data line has a broken point.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of U.S. patent application Ser. No.12/350,367, filed on Jan. 8, 2009, and entitled “Repair Structure andMethod for Liquid Crystal Display,” (which is now U.S. Pat. No.8,059,223), which is a Continuation-In-Part of U.S. patent applicationSer. No. 11/669,972, filed on Feb. 1, 2007, and entitled “RepairStructure and Method for Liquid Crystal Display,” (which is now U.S.Pat. No. 7,492,438, issued on Feb. 17, 2009), which claims priority ofTaiwan Patent Application No. 095106937, filed on Mar. 1, 2006, theentirety of which is incorporated by reference herein.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to a data line repair structure and method for aliquid crystal display, and in particular to a data line repairstructure and method applied to a chip-on-glass or thin film-on-glassstructure.

2. Description of the Related Art

Active liquid crystal panels are currently broadly used in liquidcrystal displays, liquid crystal display televisions and others, withpanel size increasing. However, large liquid crystal panels use longlines, such as scan lines and data lines, to drive thin film transistorsof each pixel unit. Broken points easily occur thereon duringmanufacture.

FIG. 1 shows a data line repair structure of a conventional liquidcrystal display 100, comprising scan line 101 and intersecting data line102. Gate driving chip 103 is bound to flexible board 104, forming atape carrier package structure. One side of flexible board 104 isconnected to liquid crystal display panel 100 and another side thereofis connected to printed circuit board 105. Source driving chip 106 isconnected to flexible board 107, forming a tape carrier packagestructure. One side of flexible board 107 is connected to liquid crystaldisplay panel 100 and another side thereof is connected to printedcircuit board 108. Gate driving chip 103 generates a gate driving signalthrough scan line 101 to drive a thin film transistor (not shown in FIG.1). Source driving chip 106 also generates a data signal through dataline 102 to write the data signal to a pixel electrode (not shown inFIG. 1).

As shown in FIG. 1, the data line repair structure comprises firstrepair line 109 and second repair line 110. First repair line 109 isparallel to scan line 101 and crosses to one end of data line 102 on theopposite side of source driving chip 106. Second repair line 110 extendsfrom the left side of flexible board 107 to the right side thereof andcrosses to data line 102 connected to source driving chip 106. When dataline 102 comprises broken point 111, a laser beam can be implanted toweld first repair line 109, second repair line 110 and data line 102 toform two connecting points 112 a and 112 b. First repair line 109 andsecond repair line 110 are connected through printed circuit boards 105and 108. Thus, a data signal generated by source driving chip 106 istransmitted through second repair line 110, lines of printed circuitboards 108 and 105 and first repair line 109 sequentially to a data lineabove broken point 111.

The conventional repair structure and method use X and Y sides ofprinted circuit boards to connect a first repair line with a secondrepair line. If the liquid crystal display panel is chip-on-glass orchip-on-film structure, in which a driving chip is bound to the liquidcrystal display panel or a flexible board to conserve X or Y sides ofthe printed circuit boards, the conventional repair structure and repairmethod can not be used.

BRIEF SUMMARY OF THE INVENTION

An exemplary embodiment of a data line repair structure for a liquidcrystal display panel is disclosed. The liquid crystal display panelcomprises a scan line, a data line crossing the scan line, a thin filmtransistor formed where the scan line crosses the data line andconnected to a pixel electrode, a gate driving chip electrical connectedto the scan line to generate a gate signal to drive the thin filmtransistor, and a source driving chip connected to the data line toprovide a data signal to the pixel electrode. The data line repairstructure comprises a first repair line parallel to the scan line andcrossing a first end of the data line; a fourth repair line formed in anoblique line area of the liquid crystal panel, coupled to the firstrepair line; a second repair line parallel to the data line, coupled tothe gate driving chip and the fourth repair line; a third repair lineparallel to the scan line, coupled to the second repair line andseparated from a second end of the data line; and a floating lineconnected between the third repair line and the second end of the dataline when the data line has a broken point. In addition, portion of thefloating line overlaps the repair line and the data line. A laser beamis implemented to weld the repair line and the data line having a brokenpoint. Further, the floating line can be formed before M1 (gate line)process, between M1 (gale line) and M2 (data line) processes, or afterM2 (data line) process. In addition, the repair line and the data lineare electrically isolated with the floating line before welding with thefloating line by the laser beam, and the material of the floating linecan be made from metal, Indium Tin Oxide (ITO), or other conductivematerials.

Another exemplary embodiment of a data line repair structure for aliquid crystal display panel is disclosed. The liquid crystal displaypanel comprises a scan line, a first data line and a second data linecrossing the scan line, a first thin film transistor formed where thescan line crosses the first data line and connected to a first pixelelectrode, a second thin film transistor formed where the scan linecrosses the second data line and connected to a second pixel electrode,a gate driving chip connected to the scan line to generate a gate signalto drive the first thin film transistor and the second thin filmtransistor, and a source driving chip connected to the first data lineand the second data line to respectively provide data signals to thefirst pixel electrode and the second pixel electrode. The data linerepair structure comprises a first first repair line and a first secondrepair line parallel to the scan line and crossing a first end of eachthe first data line and the second data line; a second first repair lineparallel to the first data line and coupled to the gate driving chip andthe first first repair line; a second second repair line parallel to thefirst data line and coupled to the gate driving chip and the firstsecond repair line; a third first repair line and a third second repairline respectively coupled to the second first repair line and the secondsecond repair line, parallel to the scan line, and separated from asecond end of each the first data line and the second data line; a firstfloating line corresponding to the first data line, overlapped andelectrically isolated with the third first repair line and the secondend of the first data line, and connected between the third first repairline and the second end of the first data line when the first data linehas a first broken point; and a second floating line corresponding tothe second data line, overlapped and electrically isolated with thethird second repair line and the second end of the second data line, andconnected between the third second repair line and the second end of thesecond data line when the second data line has a second broken point.

Another exemplary embodiment of a data line repair structure for aliquid crystal display panel is disclosed. The liquid crystal displaypanel comprises a scan line, a data line crossing the scan line, a thinfilm transistor formed where the scan line crosses the data line andconnected to a pixel electrode, a gate driving chip electrical connectedto the scan line to generate a gate signal to drive the thin filmtransistor, and a source driving chip connected to the data line toprovide a data signal to the pixel electrode. The data line repairstructure comprises a first repair line parallel to the scan line andcrossing a first end of the data line; a fourth repair line formed in anoblique line area of the liquid crystal panel, coupled to the firstrepair line; a second repair line parallel to the data line, coupled tothe fourth repair line and a bypass circuit line of a flexible board; athird repair line parallel to the scan line, coupled to the bypasscircuit line of the flexible board and separated from a second end ofthe data line; and a floating line connected between the third repairline and the second end of the data line when the data line has a brokenpoint.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention can be more fully understood by reading the subsequentdetailed description and examples with references made to theaccompanying drawings, wherein:

FIG. 1 shows a data line repair structure of a conventional liquidcrystal display;

FIG. 2 shows a data line repair structure for a liquid crystal displaypanel according to a first embodiment of the invention;

FIG. 3A shows a data line repair structure for a liquid crystal displaypanel according to a second embodiment of the invention;

FIG. 3B shows a data line repair structure for a liquid crystal displaypanel according to a third embodiment of the invention;

FIG. 4 shows a data line repair structure for a liquid crystal displaypanel according to a fourth embodiment of the invention; and

FIG. 5 shows a data line repair structure for a liquid crystal displaypanel according to a fifth embodiment of the invention.

FIG. 6 shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention.

FIG. 7A shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention.

FIG. 7B shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention.

FIG. 8 shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention.

FIG. 9 shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention.

FIG. 10 shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 2 shows a data line repair structure for a liquid crystal displaypanel according to a first embodiment of the invention. Liquid crystaldisplay panel 201, such as a glass baseboard, comprises scan line 202and data line 203 crossing scan line 202. A thin film transistor (notshown in FIG. 2) is formed at an intersection of scan line 202 and dataline 203. The thin film transistor comprises a gate coupled to scan line202, a source coupled to data line 203 and a drain coupled to a pixelelectrode (not shown). Gate driving chip 204 is connected by conductiveglue to a Y side area of liquid crystal display panel 201, achip-on-glass (COG) structure, and uses scan line 202 to transmit a gatesignal to drive the thin film transistor. Source driving chip 205 isbound to flexible board 206 a, a tape carrier package (TCP) structure,and uses data line 203 to transmit a data signal to write to the pixelelectrode. One side of flexible board 206 a is connected to liquidcrystal display panel 201 and another side thereof is connected toprinted circuit board 207. In addition, printed circuit board 207comprises a plurality of power lines and ground lines.

As shown in FIG. 2, the data line repair structure comprises firstrepair line 208 a, second repair line 208 b and third repair line 208 c.First repair line 208 a is parallel to scan line 202 and crosses one endof data line 203 near source driving chip 205. Second repair line 208 bis parallel to data line 203 and connected to gate driving chip 204.Second repair line 208 b is connected to printed circuit board 207through flexible board 206 b. Third repair line 208 c is parallel toscan line 202 and crosses another end of data line 203 on the oppositeside of source driving chip 205. The data line repair structure furthercomprises fourth repair line 208 d formed in an oblique line area ofliquid crystal display panel 201 and connected to first repair line 208a and lines of printed circuit board 207 through flexible circuit board206 a. In addition, transparent conductive layer 209 is disposed betweenfourth repair line 208 d and first repair line 208 a.

According to the first embodiment of the invention, a laser beam can beimplemented to weld first repair line 208 a and data line 203 to formconnecting point 211, weld third repair line 208 c and data line 203 toform connecting point 212 and weld transparent conductive layer 209 toconnect first repair line 208 a with fourth repair line 208 d when dataline 203 comprises broken point 210. Thus, a data signal generated bysource driving chip 205 is transmitted to data line below broken point210 through first repair line 208 a, fourth repair line 208 d, flexibleboard 206 a, lines of printed circuit board 207, flexible board 206 b,second repair line 208 b, inner circuits of gate driving chip 204 andthird repair line 208 c, sequentially.

FIG. 3A shows a data line repair structure for a liquid crystal displaypanel according to a second embodiment of the invention. Liquid crystaldisplay panel 301 is similar to the first embodiment of the invention,except that, here, gate driving chip 304 is bound to flexible board 306a, a chip-on-film (COF) structure. Flexible board 306 a is connected toliquid crystal display panel 301. Thus, second repair line 308 b isconnected to gate driving chip 304 through connecting pad 313 and oneline of flexible board 306 a. As shown in FIG. 3A, a laser beam can beimplemented to weld first repair line 308 a and data line 303 to formconnecting point 311, weld third repair line 308 c and data line 303 toform connecting point 312 and weld transparent conductive layer 309 toconnect first repair line 308 a with fourth repair line 308 d when dataline 303 comprises broken point 310. Thus, a data signal generated bysource driving chip 305 is transmitted to data line below broken point310 through first repair line 308 a, fourth repair line 308 d, flexibleboard 306 c, lines of printed circuit board 307, flexible board 306 b,second repair line 308 b, flexible board 306 a, inner circuits of gatedriving chip 304 and third repair line 308 c sequentially.

FIG. 3B shows a data line repair structure for a liquid crystal displaypanel according to a third embodiment of the invention. A data signalgenerated by source driving chip 305 is transmitted through bypasscircuit line 321 not inner circuits of gate driving chip 304. Thus, adata signal generated by source driving chip 305 is transmitted to dataline below broken point 310 through first repair line 308 a, fourthrepair line 308 d, flexible board 306 c, lines of printed circuit board307, flexible board 306 b, second repair line 308 b, flexible board 306a, bypass circuit line circuit line 321 and third repair line 308 c,sequentially.

FIG. 4 shows a data line repair structure for a liquid crystal displaypanel according to a fourth embodiment of the invention. Liquid crystaldisplay panel 401 is similar to the first embodiment of the invention,except that, here, source driving chip 405 uses conductive glue toconnect with an X side area of liquid crystal display panel 401. Thus,the data line repair structure further comprises fifth repair line 408 eand sixth repair line 408 f. Fifth repair line 408 e is parallel to scanline 402 and connected to source driving chip 405. Sixth repair line 408f is formed in an oblique line area of liquid crystal display 401 andconnected to first repair line 408 a and inner circuits of sourcedriving chip 405. In addition, transparent conductive layer 409 isdisposed between sixth repair line 408 f and first repair line 408 a.

As shown in FIG. 4, the laser beam can be implemented to weld firstrepair line 408 a and data line 403 to form connecting point 411, weldthird repair line 408 c and data line 403 to form connecting point 412and weld transparent conductive layer 409 to connect first repair line408 a with sixth repair line 408 f when data line 403 comprises brokenpoint 410. Thus, a data signal generated by source driving chip 405 istransmitted to data line below broken point 410 through first repairline 408 a, sixth repair line 408 f, inner circuits of source drivingchip 405, fifth repair line 408 e, second repair line 408 b, innercircuits of gate driving chip 404 and third repair line 408 c,sequentially.

In the embodiments, multiple repair lines of the data line repairstructure are disclosed. Thus, if there are pluralities of data lineswith broken points on crystal liquid display panel, each correspondingrepair line can be used to repair each data line with a broken point. Asshown in FIG. 5, first repair lines 501 a and 501 b are welded andconnected to odd data line 502 a and even data line 502 b, respectively.Third repair line 503 a and 503 b are also welded and connected to odddata line 502 a and even data line 502 b respectively. Thus, when odddata line 502 a has a broken point, it can use first repair line 501 a,fourth repair line 506 a, second repair line 504 a and third repair line503 a to transmit a data signal. When even data line 502 b has a brokenpoint, it can use first repair line 501 b, fourth repair line 506 b,second repair line 504 b and third repair line 503 b to transmit a datasignal.

FIG. 6 shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention. Liquid crystaldisplay panel 601 is similar to the first embodiment of the invention,except that, here, floating lines 603 are added, and third repair line208 c is not crosses the end of data line 203 on the opposite side ofsource driving chip 205. Specifically, third repair line 208 c isseparated from the end of data line 203 on the opposite side of sourcedriving chip 205. Floating line 603 crosses a portion of third repairline 208 c and overlaps the end of data line 203, and is welded by alaser beam to connect the third repair line 208 c with the end of dataline 203 where data line 203 comprises broken point 210. A laser beamcan be implemented to weld first repair line 208 a and data line 203 toform connecting point 211, weld third repair line 208 c and floatingline 603 to form connecting point 605 a, weld data line 203 and floatingline 603 to form connecting point 605 b, and weld transparent conductivelayer 209 to connect first repair line 208 a with fourth repair line 208d when data line 203 comprises broken point 210. In embodiments of theinvention, the material of the floating lines can be metal, Indium TinOxide (ITO), or other conductive materials. Thus, a data signalgenerated by source driving chip 205 is transmitted to data line belowbroken point 210 through first repair line 208 a, fourth repair line 208d, flexible board 206 a, lines of printed circuit board 207, flexibleboard 206 b, second repair line 208 b, inner circuits of gate drivingchip 204, third repair line 208 c and floating line 603, sequentially.Since the data lines 203 a other than data line 203 are not electricallyconnected to third repair line 208 c and without any overlapping withthird repair line 208 c, resistive-capacitive (RC) delay and signalinterference among data lines 203 a and third repair line 208 c arereduced.

FIG. 7A shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention. Liquid crystaldisplay panel 701 is similar to the second embodiment of the inventionshown in FIG. 3A, except that, here, floating lines 703 are added, andthird repair line 308 c is not crosses the end of data line 303 on theopposite side of source driving chip 305. Specifically, third repairline 308 c is separated from the end of data line 303 on the oppositeside of source driving chip 305. Floating line 703 crosses a portion ofthird repair line 308 c and overlaps the end of data line 303, and iswelded by a laser beam to connect the third repair line 308 c with theend of data line 303 where data line 303 comprises broken point 310. Alaser beam can be implemented to weld first repair line 308 a and dataline 303 to form connecting point 311, weld third repair line 308 c andfloating line 703 to form connecting point 705 a, weld data line 303 andfloating line 703 to form connecting point 705 b, and weld transparentconductive layer 309 to connect first repair line 308 a with fourthrepair line 308 d when data line 303 comprises broken point 310. Thus, adata signal generated by source driving chip 305 is transmitted to dataline below broken point 310 through first repair line 308 a, fourthrepair line 308 d, flexible board 306 c, lines of printed circuit board307, flexible board 306 b, second repair line 308 b, inner circuits ofgate driving chip 304, third repair line 308 c and floating line 703,sequentially. Since the data lines 303 a other than data line 303 arenot electrically connected to third repair line 308 c and without anyoverlapping with third repair line 308 c, resistive-capacitive (RC)delay and signal interference among data lines 303 a and third repairline 308 c are reduced.

FIG. 7B shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention. Liquid crystaldisplay panel 701 is similar to the second embodiment of the inventionshown in FIG. 3B, except that, here, floating lines 703 are added, andthird repair line 308 c is not crosses the end of data line 303 on theopposite side of source driving chip 305. Specifically, third repairline 308 c is separated from the end of data line 303 on the oppositeside of source driving chip 305. Floating line 703 crosses a portion ofthird repair line 308 c and overlaps the end of data line 303, and iswelded by a laser beam to connect the third repair line 308 c with theend of data line 303 where data line 303 comprises broken point 310. Alaser beam can be implemented to weld first repair line 308 a and dataline 303 to form connecting point 311, weld third repair line 308 c andfloating line 703 to form connecting point 705 a, weld data line 303 andfloating line 703 to form connecting point 705 b, and weld transparentconductive layer 309 to connect first repair line 308 a with fourthrepair line 308 d when data line 303 comprises broken point 310. Thus, adata signal generated by source driving chip 305 is transmitted to dataline below broken point 310 through first repair line 308 a, fourthrepair line 308 d, flexible board 306 c, lines of printed circuit board307, flexible board 306 b, second repair line 308 b, line 321 offlexible board 306 a, third repair line 308 c and floating line 703,sequentially. Since the data lines 303 a other than data line 303 arenot electrically connected to third repair line 308 c and without anyoverlapping with third repair line 308 c, resistive-capacitive (RC)delay and signal interference among data lines 303 a and third repairline 308 c are reduced.

FIG. 8 shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention. Liquid crystaldisplay panel 801 is similar to the embodiment of the invention shown inFIG. 6, except that, here, source driving chip 405 uses conductive glueto connect with an X side area of liquid crystal display panel 801.Thus, the data line repair structure further comprises fifth repair line408 e and sixth repair line 408 f. Fifth repair line 408 e is parallelto scan line 402 and connected to source driving chip 405. Sixth repairline 408 f is formed in an oblique line area of liquid crystal display401 and connected to first repair line 408 a and inner circuits ofsource driving chip 405. In addition, transparent conductive layer 409is disposed between sixth repair line 408 f and first repair line 408 a.

As shown in FIG. 8, the laser beam can be implemented to weld firstrepair line 408 a and data line 403 to form connecting point 411, weldthird repair line 408 c and floating line 803 to form connecting point805 a, weld data line 403 and floating line 803 to form connecting point805 b, and weld transparent conductive layer 409 to connect first repairline 408 a with sixth repair line 408 f when data line 403 comprisesbroken point 410. Thus, a data signal generated by source driving chip405 is transmitted to data line below broken point 410 through firstrepair line 408 a, sixth repair line 408 f, inner circuits of sourcedriving chip 405, fifth repair line 408 e, second repair line 408 b,inner circuits of gate driving chip 404, third repair line 408 c andfloating line 803, sequentially.

FIG. 9 shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention. Liquid crystaldisplay panel 901 is similar to the embodiment of the invention shown inFIG. 5, except that, here, floating lines 903A and 903B are added, andthird repair lines 503 a and 503 b are not crosses the end of odd dataline 502 a and even data line 502 b on the opposite side of sourcedriving chip. Specifically, third repair lines 503 a and 503 b areseparated from the end of odd data line 502 a and even data line 502 bon the opposite side of source driving chip 205. Floating line 903Acrosses a portion of third repair line 503 a and overlaps the end of odddata line 502 a, and is welded by a laser beam to connect the thirdrepair line 503 a with the end of odd data line 502 a where odd dataline 502 a comprises broken point 508 a. Floating line 903B crosses aportion of third repair line 503 b and overlaps the end of even dataline 502 b, and is welded by a laser beam to connect the third repairline 503 b with the end of even data line 502 b where even data line 502b comprises broken point 508 b.

Thus, when odd data line 502 a has a broken point 508 a, data signal canbe transmitted to data line below broken point 508 a through firstrepair line 501 a, fourth repair line 506 a, second repair line 504 a,third repair line 503 a and floating line 903 a. When even data line 502b has a broken point 508 b, the data signal can be transmitted to dataline below broken point 508 b through first repair line 501 b, fourthrepair line 506 b, second repair line 504 b, third repair line 503 b andfloating line 903 b. Since the data lines other than data lines 502 aand 502 b are not electrically connected to third repair lines 503 a and503 b and without any overlapping with third repair lines 503 a and 503b, resistive-capacitive (RC) delay and signal interference among thedata lines without broken point and third repair lines 503 a and 503 bare reduced.

FIG. 10 shows a data line repair structure for a liquid crystal displaypanel according to another embodiment of the invention. As shown in FIG.10, first repair lines 501 a and 501 b are welded and connected to dataline 502 a and data line 502 b, respectively. Floating line 1003 a iswelded and connected between third repair line 503 a and data line 502a. Floating line 1003 b is welded and connected between third repairline 503 b and data line 502 b. In addition, first repair lines 501 cand 501 d are welded and connected to data line 502 c and data line 502d, respectively. Floating line 1003 c is welded and connected betweenthird repair line 503 c and data line 502 c. Floating line 1003 d iswelded and connected between third repair line 503 d and data line 502d.

Thus, when data line 502 a has a broken point 508 a, the data signal canbe transmitted to data line below broken point 508 a through firstrepair line 501 a, fourth repair line 506 a, second repair line 504 a,third repair line 503 a, and floating line 1003 a. When data line 502 bhas a broken point 508 b, the data signal can be transmitted to dataline below broken point 508 b through first repair line 501 b, fourthrepair line 506 b, second repair line 504 b, third repair line 503 b,and floating line 1003 b. Similarly, when data line 502 c has a brokenpoint 508 c, the data signal can be transmitted to data line belowbroken point 508 c through first repair line 501 c, fourth repair line506 c, second repair line 504 c, third repair line 503 c, and floatingline 1003 c, and when data line 502 d has a broken point 508 d, the datasignal can be transmitted to data line below broken point 508 d throughfirst repair line 501 d, fourth repair line 506 d, second repair line504 d, third repair line 503 d, and floating line 1003 d. In thisembodiment, four data lines with a broken point can be repaired,improving repair efficiency of data lines. In addition, since the datalines other than data lines 502 a, 502 b, 502 c, and 502 d are notelectrically connected to third repair lines 503 a, 503 b, 503 c, and503 d and without any overlapping with third repair lines 503 a, 503 b,503 c, and 503 d, resistive-capacitive (RC) delay and signalinterference among the data lines without a broken point and thirdrepair lines 503 a, 503 b, 503 c, and 503 d are reduced.

The invention relates to a data line repair structure and repair methodfor liquid crystal display panels. The feature of the invention is thatthe floating line overlaps the repair line and the data line withoutelectrically connection before welded by a laser beam, and is connectedbetween the repair line and the data line for transmitting data signalsafter welded. Based on the liquid crystal display panel of theinvention, the gate driving chip is a chip-on-glass structure or thinfilm-on-glass structure. The source driving chip is a chip-on-glassstructure or tape carrier package structure.

While the invention has been described by way of example and in terms ofpreferred embodiment, it is to be understood that the invention is notlimited thereto. To the contrary, it is intended to cover variousmodifications and similar arrangements (as would be apparent to thoseskilled in the art). Therefore, the scope of the appended claims shouldbe accorded the broadest interpretation so as to encompass all suchmodifications and similar arrangements.

1. A data line repair method for a liquid crystal display panelcomprising: providing a liquid crystal display panel having a data linewith a broken point, a third repair line separated from a second end ofthe data line, a floating line crossing a portion of the third repairline and overlapping the second end of the data line; welding the secondend of the data line and the floating line to form a second connectingpoint; and welding the third repair line and the floating line to form athird connecting point.
 2. The data line repair method as claimed inclaim 1, wherein the liquid crystal display panel having a first repairline crossing a first end of the data line.
 3. The data line repairmethod as claimed in claim 2, comprising: welding the first repair lineand the first end of the data line to form a first connecting point. 4.The data line repair method as claimed in claim 1, wherein the liquidcrystal display panel having: a fourth repair line coupled to the firstrepair line; and a transparent conductive layer disposed between fourthrepair line and the first repair line.
 5. The data line repair method asclaimed in claim 4, comprising: welding the transparent conductive layerto connect the first repair line with the fourth repair line.
 6. Thedata line repair method as claimed in claim 1, wherein the liquidcrystal display panel having a second repair line parallel to the dataline.
 7. The data line repair method as claimed in claim 1, wherein thedata line of the liquid crystal display panel is an odd data line or aneven data line.
 8. The data line repair method as claimed in claim 6,wherein the liquid crystal display panel having a gate driving chipcoupled to the second repair line and bound to a flexible board.
 9. Thedata line repair method as claimed in claim 6, wherein the second repairline coupled to the gate driving chip by a line of the flexible board.10. The data line repair method as claimed in claim 9, wherein the thirdrepair line coupled to the gate driving chip by another line of theflexible board.
 11. The data line repair method as claimed in claim 6,wherein the second repair line coupled to a bypass circuit line by theflexible board.
 12. The data line repair method as claimed in claim 11,wherein the third repair line coupled to the bypass circuit line by theflexible board.
 13. The data line repair method as claimed in claim 1,wherein the liquid crystal display panel having a fifth repair lineparallel to a scan line and coupled to a source driving chip.
 14. Thedata line repair method as claimed in claim 13, wherein the sourcedriving chip is bound to the liquid crystal display panel.
 15. The dataline repair method as claimed in claim 13, wherein the liquid crystaldisplay panel having a sixth repair line formed in an oblique area ofthe liquid crystal display panel, and coupled to a first repair line andthe source driving chip.
 16. The data line repair method as claimed inclaim 15, wherein a transparent conductive layer is disposed between thesixth repair line and the first repair line.
 17. The data line repairmethod as claimed in claim 16 comprising: welding the transparentconductive layer to connect the first repair line with the sixth repairline.
 18. The data line repair method as claimed in claim 1, wherein theliquid crystal display panel having: a scan line, the data line crossingthe scan line; a thin film transistor formed where the scan line crossesthe data line and connected to a pixel electrode; a gate driving chipelectrical connected to the scan line to generate a gate signal to drivethe thin film transistor; and a source driving chip connected to thedata line to provide a data signal to the pixel electrode.